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    <p>啊哈哈哈
        <script>
            // 用于获取对象自身所有的属性
            var obj = {
                id: 1,
                pname: '小米',
                price: 1999,
                num: 2000
            };
            var arr = Object.keys(obj);
            console.log(arr);
            arr.forEach(function (value) {
                console.log(value);

            })
        </script>
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